670217 has 2 divisors, whose sum is σ = 670218. Its totient is φ = 670216.

The previous prime is 670211. The next prime is 670223. The reversal of 670217 is 712076.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (670211) and next prime (670223).

It can be written as a sum of positive squares in only one way, i.e., 395641 + 274576 = 629^2 + 524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670192 and 670201.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 670217.

It is not a weakly prime, because it can be changed into another prime (670211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335108 + 335109.

It is an arithmetic number, because the mean of its divisors is an integer number (335109).

2⁶⁷⁰²¹⁷ is an apocalyptic number.

It is an amenable number.

670217 is a deficient number, since it is larger than the sum of its proper divisors (1).

670217 is an equidigital number, since it uses as much as digits as its factorization.

670217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 670217 is about 818.6678203032. The cubic root of 670217 is about 87.5128470932.

The spelling of 670217 in words is "six hundred seventy thousand, two hundred seventeen".